Great sounding tube with extremely low noise floor. As soon as I put it in my matamp GT120, I noticed the background popping and hissing noises it previously made had completely disappeared. Relatively flat frequency response, with even amounts of bass, mids and treble. Great sounding when overdriven as well, though not as 'sparkly' (or fizzy) as other tubes in the upper registers but I generally prefer a flatter sounding tube to one that has too much top end gain.
Verified purchase: Yes
I replaced the factory china tubes in my 2015 Vox AC 15 with these. Literally like taking a thick pillow off he front of the amp. The new sound is AMAZING! Pony up the dough for a set of vintage tubes for your amp and you will not only believe the hype, but be wondering why on earth you waited so long to do it. They truly do not make them like this anymore so get em while you can. Rock on!
Verified purchase: Yes
I am using these in a Dynaco ST-70 Stereo Amplifier that was originally equipped with EL-34s. I had tried many different EL-34s, some quite good indeed, but all were lacking the transparency I crave. I finally decided to try a quad of Made in America GE 6L6GCs. Biasing was a breeze. So what did they sound like? The difference in transparency was immediately obvious. And down the road ? In the two months I have been listening with these tubes I have heard detail as never before and listening fatigue is a thing of the past.
Verified purchase: Yes
They sound great in my AC30C2. I've got these two in my v1, v2, a JJ Gold Pin Balanced in v3, and a quad of JJ's in the power section. Pretty significant upgrade from the stock tubes. Great shipping as well. Very Happy.
Verified purchase: Yes
A must tube for tube guitar amp Overdrive channels. Unique rare tube that colors the sound beautifully and smooth and very harmonic sweet texture . Not a tube used on a clean channel usually I think these were only made a couple of years . The shiny black short plate tube is the one im talking about. Only about 5 different 12ax7 tubes have a great overdrive sound pushed and the sylvania has a great ballsy OD sound all its own flavor not exactly like any other tube !
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